EP3305632B1 - Véhicule agricole - Google Patents

Véhicule agricole Download PDF

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Publication number
EP3305632B1
EP3305632B1 EP17185559.6A EP17185559A EP3305632B1 EP 3305632 B1 EP3305632 B1 EP 3305632B1 EP 17185559 A EP17185559 A EP 17185559A EP 3305632 B1 EP3305632 B1 EP 3305632B1
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EP
European Patent Office
Prior art keywords
roller unit
track roller
agricultural vehicle
track
crawler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17185559.6A
Other languages
German (de)
English (en)
Other versions
EP3305632A1 (fr
Inventor
Ulrich von Teschenhausen Uckelmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Claas Selbstfahrende Erntemaschinen GmbH
Original Assignee
Claas Selbstfahrende Erntemaschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Claas Selbstfahrende Erntemaschinen GmbH filed Critical Claas Selbstfahrende Erntemaschinen GmbH
Publication of EP3305632A1 publication Critical patent/EP3305632A1/fr
Application granted granted Critical
Publication of EP3305632B1 publication Critical patent/EP3305632B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/02—Endless track vehicles with tracks and additional ground wheels

Definitions

  • the present invention relates to an agricultural vehicle according to claim 1.
  • Agricultural vehicles in particular tractors, are subject to different restrictions with regard to their operation in a field to be worked or when driving on public roads.
  • the aim is to achieve as little soil compaction as possible when driving on a field to be worked.
  • this can be done by increasing the tire contact area.
  • tire pressure regulating systems are used which, for example, when changing from a public road to a field, lower the tire pressure until the tire contact area has reached a desired size.
  • the tire pressure can be increased again to such an extent that safe driving on the road is possible.
  • the agricultural vehicles are also subject to legal provisions with regard to the permissible total weight.
  • Agricultural vehicles such as tractors are often driven with attachments attached from the field to the road, for example to reach another field or a farmstead.
  • the additional weight of the attachment can result in the permissible total weight being exceeded.
  • a device for reducing soil compaction in the form of several crawler tracks is for example from the DE 10 2014 117 904 A1 known.
  • a combine harvester with a support wheel arrangement is known, the combine harvester having a vehicle frame on which a driven front axle and a steerable rear axle are arranged.
  • a support wheel arrangement which is articulated by means of a support frame on the side of the front axle facing the rear axle, the support wheels being guided in the tracks of the front wheels.
  • a force acting essentially in the vertical direction can be exerted on the support wheel arrangement by hydraulic cylinders in order to relieve the front axle.
  • the relief achieved by the support wheel arrangement changes dynamically as a function of the total weight of the combine, which increases in the course of the harvesting process when driving in the field, since the harvested crop is stored in a grain tank arranged on the vehicle frame of the combine.
  • the support wheel arrangement is provided for harvesting in the field, while the support wheel arrangement is disengaged when the combine is traveling on the road, since it is not necessary to use it.
  • the support wheel arrangement is disengaged when the combine is traveling on the road, since it is not necessary to use it.
  • An agricultural vehicle in particular a tractor, comprising a vehicle frame on which a front axle and a rear axle are arranged with ground engagement means that can be driven by a drive motor to support the vehicle against the ground, as well as a support arrangement located between the front axle and rear axle.
  • the support arrangement is designed in the form of a crawler track.
  • the crawler track is essentially in the center of the vehicle frame, within the lanes of the Ground engaging means, arranged.
  • the ground contact area of the vehicle can be increased without increasing the width of the vehicle.
  • the crawler drive is arranged displaceably by means of a lifting device between an operating position in which the crawler drive is at least partially in engagement with the ground and a transport position in which the crawler drive is lifted from the ground.
  • a caterpillar running gear designed to be displaceable enables the crawler running gear to be used only when required, as a result of which unnecessary loading and increased wear of the crawler running gear can be avoided.
  • the lifting device is designed in the form of at least one hydraulic cylinder.
  • the crawler track can have a resilient and damping effect via the at least one hydraulic cylinder and improve the driving characteristics in field operation and / or when driving on the road.
  • At least one, in particular rigid and / or variable-length, pull rod is preferably provided, by means of which the crawler track is connected to the vehicle frame at the rear.
  • the crawler unit can be guided by the pull rod when it is relocated.
  • tensile forces from the crawler tracks can be transmitted directly to the vehicle frame, which results in an improved flow of forces in the vehicle frame.
  • the crawler track system is advantageously designed to be drivable, in particular hydrostatically and / or electrically.
  • a higher drive power can be provided by a separate drive of the crawler track, in particular by a hydraulic motor and / or an electric motor.
  • the crawler unit has a caterpillar belt stretched between a front and a rear deflecting roller.
  • the caterpillar belt can be formed from an elastic, rubber-like material and / or from a metallic material. Due to the design with two deflection rollers, and in particular support rollers arranged between them on the bottom side, a compact caterpillar drive with little space requirement can be provided.
  • the crawler track unit preferably has a hold-down device on the vehicle frame side, which acts on an upper side of the crawler belt.
  • the crawler belt can be tensioned in a simple manner by the hold-down device, in particular with rollers or sliding surfaces.
  • the hold-down device which acts on the crawler belt and presses it in, further reduces the space required for the crawler unit.
  • the agricultural vehicle can preferably be operated in different driving modes, in particular a field driving mode and a road driving mode, wherein the crawler track can be switched on in each driving mode, in particular automatically.
  • driving mode special settings can be made on the vehicle, for example in the case of ground intervention means in the form of air-filled tires, a regulation of the respective tire pressures.
  • the goal in the field driving mode the goal can be a low soil compaction and in a road driving mode a safe road holding of the vehicle.
  • the crawler tracks can be switched on and used as required, both to reduce soil compaction and to support a more stable road holding of the vehicle or to comply with a legal requirement with regard to the vehicle weight and, for example, an axle load.
  • a control device for controlling the crawler track and / or the lifting device is provided.
  • This enables the crawler track unit and / or the lifting device to be switched on and controlled, in particular automatically.
  • the crawler unit in the field can be set in such a way that the front deflection roller is higher than the rear deflection roller in order to prevent the crawler unit from digging in.
  • the lifting device can be controlled in such a way that supporting forces on the outside of the curve are generated via the crawler track, which can counteract a rolling movement of the vehicle. This has the advantage that the driving stability of the agricultural vehicle can be increased, especially when driving on the road.
  • FIG. 1 shows a schematic side view of an agricultural vehicle 10.
  • the agricultural vehicle comprises a vehicle frame 12 on which a front axle 14 and a rear axle 16 with ground engagement means 18 arranged thereon in the form of, in particular air-filled, tires are arranged.
  • ground engagement means 18 can also be designed in the form of crawler tracks.
  • a drive motor 20 is arranged on the vehicle frame 12, by means of which the front axle 14, the rear axle 16 and the ground engagement means 18 can be driven via a transmission 22 and cardan shafts 24.
  • the agricultural vehicle 10 has a support arrangement in the form of a crawler track 26 located between the front axle 14 and the rear axle 16.
  • the crawler track 26 is arranged between the front axle 14 and the rear axle 16 in such a way that it is arranged laterally within the lanes of the ground engagement means 18, which are arranged on the front axle 14 and the rear axle 16.
  • the crawler drive 26 is shown in a transport position TP in which the crawler drive 26 is arranged on the vehicle frame 12 and is not in contact with the ground.
  • the crawler track 26 is arranged displaceably on the vehicle frame 12 via a lifting device 28.
  • the lifting device 28 has four hydraulic cylinders 30 which are arranged in pairs at a front and a rear end of the crawler track 26 and the vehicle frame 12.
  • the lifting cylinders 30 can be attached to an outside frame (not shown) of the crawler track 26 or directly be arranged on the crawler track 26, for example the axles of a front deflection roller 32 and / or a rear deflection roller 34.
  • the caterpillar drive 26 has a caterpillar belt 36 which is guided around the two deflection rollers 32, 34 and can be tensioned by them. Support rollers 38 are arranged on the bottom side between the deflection rollers 32, 34.
  • the crawler track 26 is connected to the vehicle frame 12 via at least one tie rod 40 in order to be able to transmit tensile forces of the track track 26 to the vehicle frame 12.
  • Two tie rods 40 can also be provided, which can be arranged on each side of the crawler track 26.
  • Lowered crawler track 26 can be operated free-running or driven.
  • the crawler track 26 has a drive 42 in the form of a hydraulic motor and / or an electric motor in at least one, in particular the rear, deflection roller 32, 34. These can be supplied with energy by the drive motor 20 by means of a hydraulic pump 44 and / or a generator 46.
  • the hydraulic pump 44 and / or the generator 46 can be arranged on a power take-off of the drive motor 20.
  • the crawler track 26 also has a hold-down device 48 which acts on the crawler belt 36 on an upper side, on the vehicle frame side, and displaces it between the deflection rollers 32, 34 in the direction of the ground, whereby the crawler belt 36 can be tensioned.
  • the hold-down device 48 can be designed to be adjustable, as a result of which the tension of the caterpillar belt 36 can be adjusted.
  • a control device 50 is provided to control the crawler track 26 and / or the lifting device 28. This enables the crawler track 26 and / or the lifting device 28, in particular each individual hydraulic cylinder 30, to be individually adjusted. Braking can be achieved, for example, via the drive 42 of the crawler track 26.
  • the crawler track 26 can be loaded evenly or more heavily at the rear than at the front, in order to prevent the front deflection roller 32 from sinking into the ground.
  • a The outside of the curve of the crawler track 26 are more heavily loaded in order to counteract a rolling movement of the vehicle 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Soil Working Implements (AREA)

Claims (8)

  1. Véhicule agricole, en particulier tracteur, comprenant un bâti de véhicule (12) sur lequel un essieu avant (14) et un essieu arrière (16) sont disposés avec des moyens de prise au sol (18) entraînables par l'intermédiaire d'un moteur d'entraînement (20) pour donner un appui au véhicule (10) par rapport au sol, ainsi qu'un agencement d'appui se trouvant entre l'essieu avant (14) et l'essieu arrière (16), caractérisé en ce que l'agencement d'appui est conçu sous la forme d'un train de roulement à chenilles (26), le train de roulement à chenilles (26) étant disposé sensiblement au milieu du bâti de véhicule (12), à l'intérieur de traces de roulement des moyens de prise au sol (18), et en ce que le train de roulement à chenilles (26) comporte une bande de chenille (36) tendue entre un galet de renvoi avant et un galet de renvoi arrière (32, 34).
  2. Véhicule agricole selon la revendication 1, caractérisé en ce que le train de roulement à chenilles (26) est disposé de façon transférable au moyen d'un dispositif de levage (28) entre une position de fonctionnement (BP), dans laquelle le train de roulement à chenilles (26) est au moins en partie en prise avec le sol, et une position de transport (TP), dans laquelle le train de roulement à chenilles (26) est décollé du sol.
  3. Véhicule agricole selon la revendication 1 ou 2, caractérisé en ce que le dispositif de levage (28) est conçu sous la forme d'au moins un vérin hydraulique (30).
  4. Véhicule agricole selon une des revendications précédentes, caractérisé en ce qu'il est prévu au moins une barre de traction (40), en particulier rigide et/ou variable en longueur, par l'intermédiaire de laquelle le train de roulement à chenilles (26) est relié, côté arrière, au bâti de véhicule (12).
  5. Véhicule agricole selon une des revendications précédentes, caractérisé en ce que le train de roulement à chenilles (26) est conçu de façon entraînable, en particulier hydrauliquement et/ou électriquement.
  6. Véhicule agricole selon une des revendications précédentes, caractérisé en ce que le train de roulement à chenilles (26) comporte, côté bâti de véhicule, un abaisseur (48) qui agit sur le dessus de la bande de chenille (36).
  7. Véhicule agricole selon une des revendications précédentes, caractérisé en ce que le véhicule (10) peut être exploité dans différents modes de marche, en particulier dans un mode de marche en champ et dans un mode de marche sur route, le train de roulement à chenilles (26) pouvant être amené, en particulier automatiquement, dans chaque mode de marche.
  8. Véhicule agricole selon une des revendications précédentes, caractérisé en ce qu'il est prévu un dispositif de commande (50) pour commander le train de roulement à chenilles (26) et/ou le dispositif de levage (28).
EP17185559.6A 2016-09-30 2017-08-09 Véhicule agricole Active EP3305632B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016118619.8A DE102016118619A1 (de) 2016-09-30 2016-09-30 Landwirtschaftliches Fahrzeug

Publications (2)

Publication Number Publication Date
EP3305632A1 EP3305632A1 (fr) 2018-04-11
EP3305632B1 true EP3305632B1 (fr) 2021-11-03

Family

ID=59579496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17185559.6A Active EP3305632B1 (fr) 2016-09-30 2017-08-09 Véhicule agricole

Country Status (2)

Country Link
EP (1) EP3305632B1 (fr)
DE (1) DE102016118619A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12071184B2 (en) * 2020-03-31 2024-08-27 Gebhard Charles Wager Wheeled vehicle having retractable driven tracks

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1296309A (en) * 1917-10-09 1919-03-04 Richard J Netzel Tractor device for motor-vehicles.
US4340127A (en) * 1977-08-30 1982-07-20 Broberg Peter O Tractor
NL191206C (nl) * 1989-08-25 1995-03-16 Ver Bedrijven Van Den Berg Hee Voor weg- en terreingebruik geschikt motorvoertuig en hulponderstel bestemd voor een dergelijk voertuig.
DE10240236A1 (de) 2002-08-28 2004-03-18 Claas Selbstfahrende Erntemaschinen Gmbh Stützradanordnung für Fahrzeug
RU2347708C2 (ru) * 2007-03-28 2009-02-27 Феликс Аронович Черняков Вездеход
DE102014117904A1 (de) * 2014-12-04 2016-06-09 Josef Winkler Bodengebundenes Fahrzeug mit einer Einrichtung zur Verringerung der Bodenverdichtung

Also Published As

Publication number Publication date
DE102016118619A1 (de) 2018-04-05
EP3305632A1 (fr) 2018-04-11

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